>> dubuque, iowa, hosted both president obama and republican nominee mitt romney, both of whom consider iowa a critical part of their battleground map. the candidates crossed path within hours of each other as they barnstormed iowa and six other tossup states, make their final arguments in the last week of the campaign. >> the question of this election comes down to this -- do you want more of the same, or do you want real change? >> pu here's the thing. we know what change looks like, and what he's selling is not change. >> the president was joined by musicians john mellencamp and katy perry. governor romney got i -- a boost from nascar legend richard petty. >> with only two more days of campaigning left, the candidates are just beginning their blitz of the battleground states much the two campaigns are even battling for new hampshire and its four electoral votes. president obama and former president clinton are there on sunday a day after romney was stumping in the granite state. >>> long lines at early voting centers across the state for days have translated into an impressive turnou